Showing structure for 9-[(2-hydroxy-3-methylpent-3-enoyl)oxy]-7-(2-hydroxypropan-2-yl)-6-(3-methoxy-3-oxopropyl)-3a,6,9a-trimethyl-3-[5-(2-methylprop-1-en-1-yl)oxolan-3-yl]-2h,3h,4h,5h,5ah,7h,8h,9h-cyclopenta[a]naphthalen-5-yl 2-hydroxy-3-methylpent-3-enoate